EUVD-2026-78936
GHSA-gp6h-7p69-238v
Vulnerability Assessment
| Weakness |
CWE
OWASP Top 10:2025
A01:2025 - Broken Access Control
ASVS 5.0
V8 - Authorization Authorization verification
MITRE ATT&CK
1 technique across 1 tactic: Defense Evasion The technique list with ATT&CK links and the kill-chain view is part of the Basic plan and up. |
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Alert meAnalysisAIv1 – Sep 15, 2026
Improper authorization in Atlassian Jira Service Management Data Center 11.3.0 through 11.3.10 lets an authenticated, low-privileged attacker reach functionality and data they should not be able to access, with the vendor scoring it 7.1 in CVSS 4.0 (AV:N/AC:L/PR:L/UI:N/VI:H). Atlassian states the flaw was discovered through its own penetration-testing program and that the impact could extend from exposure of sensitive resources to arbitrary code execution, though the published CVSS 4.0 vector only credits a high integrity impact and rates confidentiality and availability as none. No CISA KEV listing, EPSS score, or public exploit code was provided in the source data, so at time of analysis this should be treated as a confirmed but not yet observed-in-the-wild authorization bypass; patched versions (11.3.11 and later) are already available.
Affected VersionsENISA
Affected Packages
Source: OSV (Open Source Vulnerabilities)
Affects your stack
Affects 1 package in euvd
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Severity by source
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N
Primary rating from Vendor (atlassian) · only source for this CVE.
CVSS VectorVendor: atlassian
DescriptionCVE.org
This High severity Improper Authorization vulnerability was introduced in version 11.3.0 of Jira Service Management Data Center.
This Improper Authorization vulnerability, with a CVSS Score of 7.1, allows an authenticated attacker to gain unintended access and can lead to the exposure of resources or functionality, possibly providing attackers with sensitive information or even execute arbitrary code.
Atlassian recommends that Jira Service Management Data Center customers upgrade to latest version, if you are unable to do so, upgrade your instance to one of the specified supported fixed versions:
- Jira Service Management Data Center 11.3: Upgrade to a release greater than or equal to 11.3.11
See the release notes (https://confluence.atlassian.com/servicemanagement/jira-service-management-release-notes-780083086.html). You can download the latest version of Jira Service Management Data Center from the download center (https://www.atlassian.com/software/jira/service-management/download-archives).
This vulnerability was reported via our Penetration Testing program.
Threat Intelligence Overview
NVD
CVE.org
EPSS
Vulnrichment
How this decision was reached
The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.
What every action level means
SSVC AssessmentENISA
Priority Score
Attack Technique
Authentication bypass attacks exploit flaws in the verification mechanisms that control access to systems and applications.
Remote Code Execution represents the critical moment when an attacker successfully runs arbitrary code on a target system without physical access.
Exploit-DB